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There are a large number of “river crossing puzzles” in the world of logic puzzles, in which people must cross a river with a variety of constraints. One of the most popular of these puzzles is the Bridge and Torch Problem, which tests your logic skills and your rational thinking. Though it may seem like a simple enough question, the answer to this tricky word problem eludes many of the people who try to solve it.

In the Bridge and Torch Problem, four people approach a riverbank at night. The narrow bridge nearby can only hold two people at a time. They only have one torch, but it has to be used when crossing the bridge. It takes Person A one minute to cross, Person B two minutes to cross, Person C five minutes, and Person D eight minutes. Two people crossing the bridge together must move at the slower person’s pace.

Can all of the people cross the bridge in 15 minutes or less? Once you reach an answer, check it here!

CC-BY-SA-2.0/Flickr/CrosswordMan

Boomtown Coffee is a hip and friendly coffee shop that’s well-liked by coffee aficionados, but just as welcoming for those who don’t know a thing about their morning brew. If you like good coffee in an unpretentious atmosphere, you’ll love this bright and sunny café that contains its very own artisan coffee roaster on site. All of Boomtown's unique coffees are sourced from responsible growers and importers and roasted right in the shop to ensure the freshest, most flavorful cup possible.

If you get hungry while visiting, Boomtown Coffee also offers a complete menu of café favorites, including daily quiche, breakfast tacos, and homemade granola for breakfast, hearty soups, and croissant sandwiches for lunch and many vegan and vegetarian options for those with restricted diets.

Whether you’re meeting a friend or catching up on work, Boomtown Coffee is a great place to get caffeinated.

Boomtown Coffee
242 W. 19th Street
Houston, TX 77008
(713) 862-7018
www.boomtowncoffee.com

CC-BY-SA-2.0/Flickr Miss Ichijouji